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A solitary pulmonary nodule (SPN) or coin lesion, [1] is a mass in the lung smaller than three centimeters in diameter. A pulmonary micronodule has a diameter of less than three millimetres. [2] There may also be multiple nodules. One or more lung nodules can be an incidental finding found in up to 0.2% of chest X-rays [3] and around 1% of CT ...
The Pancoast tumor was first described by Hare in 1838 as a "tumor involving certain nerves". [2] It was not until 1924 that the tumor was described in further detail, when Henry Pancoast, a radiologist from Philadelphia, published an article in which he reported and studied many cases of apical chest tumors that all shared the same radiographic findings and associated clinical symptoms, such ...
Cardiogenic pulmonary edema and ARDS are common causes of a fluid-filled lung. Diffuse alveolar hemorrhage is a rarer cause of diffuse GGO seen in some types of vasculitis, autoimmune conditions, and bleeding disorders. [6] Inflammation and fibrosis can also cause diffuse GGOs.
left heart catheterization: LHRH: luteinizing hormone–releasing hormone: Lig: ligament: LIH: left inguinal hernia: LLD: leg length discrepancy: LLE: left lower extremity: LLETZ: large loop excision of the transformation zone: LLL: left lower lobe LLQ: left lower quadrant: LM: left main LMA: left mentoanterior (fetal position) laryngeal mask ...
The most common causes of CAP vary depending on a person's age, but they include Streptococcus pneumoniae, viruses, the atypical bacteria, and Haemophilus influenzae. Overall, Streptococcus pneumoniae is the most common cause of community-acquired pneumonia worldwide. Gram-negative bacteria cause CAP in certain at-risk populations. CAP is the ...
In PMF, lesions most commonly occupy the upper lung zone, and are usually bilateral. The development of PMF is usually associated with a restrictive ventilatory defect on pulmonary function testing. PMF can be mistaken for bronchogenic carcinoma and vice versa. PMF lesions tend to grow very slowly, so any rapid changes in size, or development ...
In radiology, the Golden S sign, also known as the S sign of Golden, is a radiologic sign seen on chest X-ray that suggests a central lung mass or a lung collapse. [1] It was first described by, and subsequently named after, Dr Ross Golden (1889–1975) in 1925 in association with bronchial carcinoma, [2] but it is also seen in metastatic cancer, enlarged lymph nodes, and collapse of the right ...
A lung cyst, or pulmonary cyst, encloses a small volume of air, and has a wall thickness of up to 4 mm. [3] A minimum wall thickness of 1 mm has been suggested, [3] but thin-walled pockets may be included in the definition as well. [4] Pulmonary cysts are not associated with either smoking or emphysema. [5]